I cannot provide direct download links to ROMs or WAD files, as distributing copyrighted game files violates safety guidelines.
It was a mundane search, born of nostalgia. My original Wii had died years ago—the disc drive grinding itself into a noisy oblivion—and I had a sudden, desperate need to hear the 8-bit crunch of the opening stage again. I wasn’t looking for anything rare. Megaman 9 was a digital title, widely released on the Wii Shop Channel back in 2008. Finding a backup should have been trivial.